3GPP 23.501 v20.2.0 — the document's own text
N.3 Selection of network providing access to Localized Services
Taught in 24. Networks that are not for everybody (The 5G system architecture, in depth).
The UE selects an SNPN providing access for Localized Services as described in clause 5.30.2.4.2, clause 5.30.2.4.3 and in TS 23.122 [17].